SE436855B - DEVICE FOR PREVENTING SLIP OF ONE OR MORE WHEELS, SPECIAL AT STARTING - Google Patents

DEVICE FOR PREVENTING SLIP OF ONE OR MORE WHEELS, SPECIAL AT STARTING

Info

Publication number
SE436855B
SE436855B SE7902929A SE7902929A SE436855B SE 436855 B SE436855 B SE 436855B SE 7902929 A SE7902929 A SE 7902929A SE 7902929 A SE7902929 A SE 7902929A SE 436855 B SE436855 B SE 436855B
Authority
SE
Sweden
Prior art keywords
brake
wheel
wheels
speed
driven wheels
Prior art date
Application number
SE7902929A
Other languages
Swedish (sv)
Other versions
SE7902929L (en
Inventor
E Reinecke
Original Assignee
Wabco Fahrzeugbremsen Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19782818813 external-priority patent/DE2818813C3/en
Application filed by Wabco Fahrzeugbremsen Gmbh filed Critical Wabco Fahrzeugbremsen Gmbh
Publication of SE7902929L publication Critical patent/SE7902929L/en
Publication of SE436855B publication Critical patent/SE436855B/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17Using electrical or electronic regulation means to control braking
    • B60T8/175Brake regulation specially adapted to prevent excessive wheel spin during vehicle acceleration, e.g. for traction control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00Brake-action initiating means
    • B60T7/12Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/48Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809Traction control, stability control, using both the wheel brakes and other automatic braking systems
    • B60T8/4818Traction control, stability control, using both the wheel brakes and other automatic braking systems in pneumatic brake systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)

Description

7902929-4 verksam även under körning och att fordonet inte såsom vid användning av differentialspärr varje gång först måste stanna för mekanisk in- läggning av spärren. I förbindelse med en làsningsreglerad fordons- bromsanläggning är kostnaden för byggdelar vid den uppfinningsenliga startreglerkopplingen särskilt låg enär man i stor utsträckning kan använda byggdelarna till antilåsanläggningen. 7902929-4 is also effective while driving and that the vehicle does not, as when using a differential lock, have to stop every time for mechanical loading of the lock. In connection with a lock-controlled vehicle brake system, the cost of components in the starting control coupling according to the invention is particularly low, since the components can be used to a large extent for the anti-lock system.

Vidare fördelaktiga utbildningar av uppfinningen är angivna i de osjälvständiga kraven.Further advantageous teachings of the invention are set forth in the dependent claims.

Uppfinningen förklaras närmare nedan med hjälp av bilagd rit- ning över ett utföringsexempel. Ritningen visar sehematiskt en anord- ning (startreglerkoppling) 1 för att hindra slirning av ett drivet hjul i en tvakretsbromsanläggning med två tryckbehållare 2 och 4, en bromsventil 6 och med fyra hjul samordnade magnetreglerventiler 8, 10, 12, 14 i en antilåsningsreglerad fordonsbromsanläggning (endast delvis visad) samt bromscylindrar 16, 18, 20, 22 och tryckmedelsled- ningar 24 för bakhjulsbromskretsen och 26 för framhjulsbromskretsen. _ Anordningen har en elektrisk kopplingsanordning 28 för fast- ställande av varvtalsskillnader mellan de drivna hjulen och de icke drivna hjulen samt för alstring av styrsignaler för inmatning av tryck i det slirande drivhjulets bromseylinder. Kopplingsanordningen 28 kopplas in av föraren över en brytare 30 när han konstaterar hjul- slirning varvid samtidigt magnetreglerventilerna 8 och 10 aktiveras att stänga och en magnetventil 32 aktiveras vilken över en grenventil 33 släpper fram tryekmedel till de drivna hjulens magnetreglerventi- ler 8 och 10. Som brytare används en automatiskt urkopplande tryck- knappsbrytare för att hindra oavsiktlig inkoppling.The invention is explained in more detail below with the aid of the accompanying drawing of an exemplary embodiment. The drawing seematically shows a device (starting control coupling) 1 for preventing slippage of a driven wheel in a two-circuit brake system with two pressure vessels 2 and 4, a brake valve 6 and four-wheel coordinated solenoid control valves 8, 10, 12, 14 in an anti-lock controlled vehicle brake system ( only partially shown) as well as brake cylinders 16, 18, 20, 22 and pressure medium lines 24 for the rear-wheel brake circuit and 26 for the front-wheel brake circuit. The device has an electrical coupling device 28 for determining speed differences between the driven wheels and the non-driven wheels and for generating control signals for inputting pressure into the brake cylinder of the sliding drive wheel. The coupling device 28 is switched on by the driver over a switch 30 when he detects wheel slip, at the same time the solenoid control valves 8 and 10 are activated to close and a solenoid valve 32 is activated which via a branch valve 33 releases pressure means to the solenoid control valves 8 and 10 of the driven wheels. switch uses an automatically disengaging pushbutton switch to prevent accidental connection.

Konstateras i kopplingsanordningen 28 en hastighetsskillnad som är högre än ett förutbestämt tröskelvärde alstras en reglersignal som avmagnetiserar den med det otillåtligt snabbt roterande hjulet samordnade magnetventilen och åstadkommer en tryckinmatning över den- na magnetreglerventil i hjulets bromscylinder. Tryekinmatningen pågår så länge tills hastighetsskillnaden åter ligger under tröskelvärdet varvid företrädesvis en stegvis tryckhöjning tillämpas.If a speed difference which is higher than a predetermined threshold value is detected in the coupling device 28, a control signal is generated which demagnetizes the solenoid valve coordinated with the impermissibly fast rotating wheel and provides a pressure input over this solenoid control valve in the wheel brake cylinder. The pressure input continues until the speed difference is again below the threshold value, whereby preferably a stepwise pressure increase is applied.

Bromstrycksregleringen kan även ske så att trycket kontinuer- ligt eller i pulser höjas så länge tills det icke slirande praktiskt taget stillastående hjulet överskrider en förutbestämd hastighet och att då det uppnådda trycket hálles konstant. Så snart en förutbestämd hastighetsskillnad underskrides sänkas åter trycket vid det bromsade hjulet stegvis. Överskrides då åter hastighetsskillnaden höjas broms-The brake pressure regulation can also take place so that the pressure is continuously or in pulses increased until the non-slip practically stationary wheel exceeds a predetermined speed and that then the pressure reached is kept constant. As soon as a predetermined speed difference is exceeded, the pressure at the braked wheel is gradually reduced again. If the speed difference is exceeded again, the braking

Claims (9)

3 7902929-4 trycket åter motsvarande. Detta reglerspel upprepas tills hjulet eller hjulen inte längre slirar. _ När de icke drivna hjulen natt en bestämd hastighet eller när en bestämd fordonshastighet uppnåtts avkopplas hela anläggningen för att hindra överhettning av bromsarna. Med avvikelse från anordningen enligt ritningen kan aktivering av magnetventilen 32 även ske automatiskt över kopplingskretsen 28 när startreglerkopplingen träder 1 funktion. I detta fall kan brytaren 30 utelämnas. l För att hindra att startreglerkopplingen träder i funktion vid en reguljär bromsning eller vid en reglerad bromsning är en epärrkopp- ling anordnad som i sådant fall kopplar bort startreglerkopplingen. På annat sätt än vid anordningen enligt den bilagda ritningen kan tryekinmatningen även ske genom bromspedalen. I detta fall kan man avstå från magnetventilen 32. Bromstryckets stegvisa inmatning sker då över bromsventilen och över den låsningsreglerade fordons- bromsanlëggningens motsvarande magnetreglerventil. Vid en sådan anord- ning är det visserligen nödvändigt att i regleringen även ta med mag- netreglerventilerna för de icke drivna hjulen vilket här betyder att när startreglerkopplingen träder i funktion innan bromspedalen betjä- nas dessutom även de icke drivna hjulens magnetventiler stängs. P a t e n t k r a v :3 7902929-4 pressure again corresponding. This rule game is repeated until the wheel or wheels no longer slip. When the non-driven wheels are at a certain speed at night or when a certain vehicle speed is reached, the whole system is switched off to prevent the brakes from overheating. With deviation from the device according to the drawing, activation of the solenoid valve 32 can also take place automatically over the coupling circuit 28 when the start control coupling enters into operation. In this case, the switch 30 can be omitted. l To prevent the starting control clutch from coming into operation during a regular braking or during a regulated braking, a paired clutch is provided which in such a case disconnects the starting control clutch. In a different way than with the device according to the attached drawing, the pressure input can also take place through the brake pedal. In this case, the solenoid valve 32 can be dispensed with. The stepwise input of the brake pressure then takes place over the brake valve and over the corresponding solenoid control valve of the lock-controlled vehicle brake system. With such a device, it is admittedly necessary to also include the solenoid control valves for the non-driven wheels in the control, which here means that when the starting control coupling comes into operation before the brake pedal is operated, the non-driven wheel solenoid valves are also closed. P a t e n t k r a v: 1. Anordning för att förhindra slirning av ett eller flera drivna hjul vid acceleration, med en jämförelseanordning (1) för övervakning och jämförelse av rotationsförhàllandet hos de drivna hjulen inbördes och/eller i förhållande till de icke-drivna hjulen, vilken anordning vid avvikelse hos de med varandra jämförda hjul- hastigheterna från varandra med mer än ett förutbestämt värde åstad- kommer bromsning av det eller de slirande hjulen, k ä n n e t elc k - n a d av att anordningen innefattar en första magnetventil (32), som _ medelst en brytare (30) kan manövreras manuellt av föraren eller manöv- reras automatiskt i beroende av en etyrsignal från jämförelseanordningen, och över en grenventil (33) i bromekretsen för de drivna hjulen tillför bromstryck till de drivna hjulens hjulbromsar (16,18), och att samtidigt de till hjulbromsoylindrarna hörande magnetventilerna (8,10) till en början magnetiserae att stänga och därfter i beroende av jämförelse- anordningens utvärdering kan avmagnetiseras för att direkt släppa in det på ventilingàngarna liggande brometrycket i hjulbromscylindern (16 och/eller 18) för det eller de slirande hjulen. 7902929-4 4Device for preventing slippage of one or more driven wheels during acceleration, with a comparison device (1) for monitoring and comparing the rotational relationship of the driven wheels with each other and / or in relation to the non-driven wheels, which device in case of deviation of the wheel speeds compared with each other by more than one predetermined value provide braking of the sliding wheel or wheels, characterized in that the device comprises a first solenoid valve (32), which - by means of a switch ( 30) can be operated manually by the driver or operated automatically depending on an etching signal from the comparator, and over a branch valve (33) in the brake circuit for the driven wheels supplies brake pressure to the wheel brakes (16,18) of the driven wheels, and that at the same time they the solenoid valves (8,10) belonging to the wheel brake cylinders initially magnetise to close and then, depending on the evaluation of the comparison device, is inserted to directly let the brake pressure lying on the valve inlets into the wheel brake cylinder (16 and / or 18) of the sliding wheel or wheels. 7902929-4 4 2. Anordning enligt kravet 1, k ä n n e t e c k n a d av att den har åtminstone två rotationsgivare för övervakning av hjulens rotationsförhållande, varvid de av hjulhastigheten beroende givar- signalerna tillförs till en komparator (28), som jämför hastighets- skillnaden mellan de drivna hjulen och/eller de drivna och de icke drivna hjulen med ett förutbestämt tröskelvärde, och vid överskridande av detta tröskelvärde avger styrsignaler, som manövrerar ventilerna (32,33) för tillförsel av bromstryck till hjulbromscylindern till det för tillfället snabbare gående drivna fordonshjulet eller broms- cylindrarna till de för tillfället snabbare gående drivna fordons- hjulen. i .Device according to claim 1, characterized in that it has at least two rotary sensors for monitoring the rotation ratio of the wheels, the sensor signals depending on the wheel speed being supplied to a comparator (28) which compares the speed difference between the driven wheels and / or the driven and non-driven wheels with a predetermined threshold value, and when this threshold value is exceeded, control signals are emitted, which actuate the valves (32, 33) for supplying brake pressure to the wheel brake cylinder to the currently faster driven vehicle wheel or brake cylinder. currently faster driven vehicle wheels. i. 3. Anordning enligt kravet in eller 2, k ä n n e t e c k n a d .av att anordningen (28,32,33) för tillförsel av bromstryek höjer bromstrycket kontinuerligt eller stegvis tills den av komparatorn konstaterade hastighetsskillnaden underskrider ett förutbestämt värde.Device according to Claim 1 or 2, characterized in that the device (28, 32, 33) for supplying brake pressure raises the brake pressure continuously or stepwise until the speed difference determined by the comparator falls below a predetermined value. 4. Anordning enligt kravet-3, k ä n n e t e c k n a d av att anordningen höjer bromstrycket tills det icke bromsade hjulets hastig- het i förhållande till det bromsade hjulets hastighet överskrider ett förutbestämt värde och sedan håller bromstrycket konstant och sänker bromstrycket vid underskridande av en förutbestämd hastighetsskillnad kontinuerligt eller stegvis tills hastighetsskillnáden åter överskri- der den förutbestämda skillnaden.Device according to claim 3, characterized in that the device raises the brake pressure until the speed of the unbraked wheel in relation to the speed of the braked wheel exceeds a predetermined value and then keeps the brake pressure constant and lowers the brake pressure continuously when a predetermined speed difference is exceeded. or stepwise until the speed difference again exceeds the predetermined difference. 5. Anordning enligt kravet 3 eller 4, k ä n n e t e c k n a d av att en tryckinmatning är anordnad över bromspedalen (6) i stället för över den första magnetventilen (32), varvid genom manövrering av bromspedalen samtidigt alla de med de bromsbara hjulen samordnade magnetventilerna (8,10,12,14) påverkas för stängning.Device according to claim 3 or 4, characterized in that a pressure supply is arranged over the brake pedal (6) instead of over the first solenoid valve (32), wherein by operating the brake pedal simultaneously all the solenoid valves (8) coordinated with the brakeable wheels , 10,12,14) is affected for closing. 6. Anordning enligt något av föregående krav i kombination med en låsningsfri fordonsbromsanläggning, k ä n n e t e c k n a d av att den vid anordningen använda rotationsgivaren är den lasningsfria bromsanläggningens sensor, och de med hjulbromscylindrarna samordnade magnetventilerna är den låsningsfria fordonsbromsanläggningens magnet- 'reglerventiler, att den lasningsfria fordonsbromsanläggningens regler- elektronik som tillägg har en kopplingsanordning för logisk anknytning av anordningen (startreglerkopplingen) med den låsningsfria fordons- ' bromsanläggningens elektroniska koppling.Device according to one of the preceding claims in combination with a lock-free vehicle brake system, characterized in that the rotary sensor used in the device is the sensor of the lock-free brake system, and the solenoid valves coordinated with the wheel brake cylinders are the lock-free vehicle brake system's solenoid valve control electronics in addition have a coupling device for logical connection of the device (starting control coupling) with the electronic connection of the anti-lock vehicle braking system. 7. Anordning enligt något av föreågende krav, k ä n n e - t e c k n a d av att den är anordnad att vid uppnående av en bestämd körhastighet resp hastighet hos de icke drivna hjulen frånkopplas. 7902929-47. Device according to any one of the preceding claims, characterized in that it is arranged that when a certain driving speed or speed of the non-driven wheels is reached, it is disconnected. 7902929-4 8. Anordning enligt något av föregående krav, k lä n n e - t e c k n a. d av att anordningen (1) alterngtivt eller som tillägg aktiverar en på drivsidan inrättad anordning för minskning av varv- talet.Device according to one of the preceding claims, characterized in that the device (1) alternatively or in addition activates a device arranged on the drive side for reducing the speed. 9. Anordning enligt något av föregående krav, k ä n n e - t e c k n a d av att den innefattar en spärrkoppling, som vid en reguljär eller en reglerad bromsning spärrar anordningen (start- reglerkopplingen) .Device according to one of the preceding claims, characterized in that it comprises a locking clutch which, in the event of a regular or a regulated braking, locks the device (starting control clutch).
SE7902929A 1978-04-28 1979-04-03 DEVICE FOR PREVENTING SLIP OF ONE OR MORE WHEELS, SPECIAL AT STARTING SE436855B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782818813 DE2818813C3 (en) 1978-04-28 1978-04-28 Arrangement for preventing the spinning of one or more driven wheels, especially when starting off

Publications (2)

Publication Number Publication Date
SE7902929L SE7902929L (en) 1979-10-29
SE436855B true SE436855B (en) 1985-01-28

Family

ID=6038311

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7902929A SE436855B (en) 1978-04-28 1979-04-03 DEVICE FOR PREVENTING SLIP OF ONE OR MORE WHEELS, SPECIAL AT STARTING

Country Status (16)

Country Link
US (1) US4260199A (en)
JP (1) JPS54144557A (en)
AT (1) AT390416B (en)
BR (1) BR7902500A (en)
CA (1) CA1133095A (en)
CH (1) CH644314A5 (en)
CS (1) CS215011B2 (en)
FR (1) FR2424144B1 (en)
GB (1) GB2020382B (en)
HU (1) HU180113B (en)
IT (1) IT1118599B (en)
NL (1) NL189661C (en)
PL (1) PL118193B1 (en)
SE (1) SE436855B (en)
SU (1) SU913927A3 (en)
YU (1) YU102979A (en)

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Also Published As

Publication number Publication date
CH644314A5 (en) 1984-07-31
AT390416B (en) 1990-05-10
CS215011B2 (en) 1982-06-25
FR2424144A1 (en) 1979-11-23
SE7902929L (en) 1979-10-29
SU913927A3 (en) 1982-03-15
IT1118599B (en) 1986-03-03
CA1133095A (en) 1982-10-05
FR2424144B1 (en) 1986-11-21
NL189661C (en) 1993-06-16
NL189661B (en) 1993-01-18
GB2020382A (en) 1979-11-14
PL214481A1 (en) 1979-11-19
ATA205279A (en) 1989-10-15
JPH0154226B2 (en) 1989-11-17
NL7902761A (en) 1979-10-30
US4260199A (en) 1981-04-07
BR7902500A (en) 1979-10-30
PL118193B1 (en) 1981-09-30
IT7967904A0 (en) 1979-04-27
GB2020382B (en) 1982-04-28
HU180113B (en) 1983-02-28
JPS54144557A (en) 1979-11-10
YU102979A (en) 1982-08-31

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